Originally Posted by
Silverbraze
Files, just files, nothing wrong with a file and some care and skill
one only has a thin section, 1.20mm lug wall of approx .50mm left of the undersize hole to remove.
No need for a reamer either.
I don't think I am clear on what you are saying. You are removing .5mm from the ID of a tube with a file or just some weld drop-through?